Being healthy depends on eating the right kind and right amount of food. a. true b. false

The following image is of a diatom. it lives in water and gets food from photosynthesis. it is encased in a hard shell made of something similar to glass or sand . a diatom is a(n) because it has a) multi-celled organism; specialized parts. b) vertebrate; a skeleton. c) insect; an exoskeleton. d) single-called organism; only one cell.

In general, characteristics that an organism survive and reproduce become more common over time. what mechanism of evolution causes this?

Has regulatory areas for thirst, hunger, body temperature, water balance, and blood pressure